Well-Defined Polycaprolactone Precursors for Low Surface-Energy Polyurethane FilmsJournal of Polymer Science, Polymer Chemistry (2008)
AbstractFor the purpose of developing model coating systems, it is important to use well-defined coating precursors. In this work, polyester oligomers were synthesized by controlled ring-opening polymerization of ε-caprolactone and 4-tert-butyl-ε-caprolactone via an activated monomer mechanism. These well-defined oligomers, including 3-armed hydroxyl-functionalized polyesters and perfluoroalkyl-end-capped linear polyesters, have been obtained with controlled functionality and low-molecular weight polydispersity and without the formation of cyclic structures, as demonstrated by MALDI-ToF MS analyses. The polymer architecture and functionality can be tuned by using different initiating alcohols. These oligomers have been used as precursors to prepare model low surface-energy polyurethane coatings. Upon the addition of about 1 wt % of fluorine in the polyurethane films, the advancing contact angles for water and hexadecane have been increased to 105° and 78°, respectively, the surface enrichment of fluorinated species has been confirmed by X-ray photoelectron spectroscopy.
- Low Surface-Energy Coatings,
- Ring-Opening Polymerization,
- Well-Defined Polycaprolactones
Citation InformationT Dikić, Weihua Ming, Peter C. Thüne, Rolf A.T.M. van Benthem, et al.. "Well-Defined Polycaprolactone Precursors for Low Surface-Energy Polyurethane Films" Journal of Polymer Science, Polymer Chemistry Vol. 46 Iss. 1 (2008)
Available at: http://works.bepress.com/weihuamarshall_ming/10/